CHINT NVF5-0.75/TS4-B - Page 70

NVF5 Series User Manual Chapter 6 Parameter Function Description
Output Vol. V
Output freq. f
Max.
Output Vol.
Normal
running freq.
V3
V2
V1
f1 f2 f3
0
（f1,V1）
multi-point VF
curve point 1
（f2,V2）
multi-point VF
curve point 2
（f3,V3）
multi-point VF
curve point 3
Figure 6-5-2 Custom Multi-Point V/F Curve
● Reduced Torque V/F Curve：Under the rated frequency, the relationship between the
output voltage and the output frequency varies according to the 2nd power, 1.7th power
and 1.2th power curves，this V/F curve is suitable for the load of fans and pumps.
Output Vol.
V
Output freq. f
Max.
Output Vol.
Normal
Running Freq.
Linear
Type
1.2th power V/F curve
1.7th power V/F curve
2.0th power V/F curve
Square
Type
Figure 6-5-3 Reduced Torque V/F Curve
6.5.2 V/F Seperation Curve Setting
Code Name Default Setting Range Description
F4.12
VF Separation Output
Voltage Channel
0 0 ～ 3
0 ：
Keypad
Setting
1：AI1
2：
AI2
3：
Reserve
Note：100%
Corresponding
Motor Rated
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